>> they also took a trip to see the boat where police arrested dzhokhar tsarnaev four days after the bombing. they saw the words he scrawl inside that boat. some of which were hard to read because of all the bullet holes. >> if all, three people were killed. more than 260 wounded in the boston marathon attacks. a police officer was also kill ded in the days after the bombing. a 20-year-old man accused of shooting police during a protest in ferguson, missouri says officers beat him up while in custody. >> jeffrey williams is charged with assault after the shooting. police deny roughing him up. williams' attorney his client has been you bruised. you see what appears to be an abrasion in the mug shot. not clear how that may have happened. williams' lawyer told us what his client says happened. >> he's scared. this has been pretty traumatic for him. one thing that is clear is that he has a large moon amount of bruise -- large amount of bruising on his body that i